What is Noise? - Sound is what we hear. Noise is unwanted sound especially a loud and undesirable one and it can be hazardous to a person's hearing if he or she is exposed long and often enough.
- Continuous: constant and stable noise over period of time, e.g. from grinder, boiler or powered equipment.
- Intermittent: has perceptible gaps between repetition.
- Impulse: short burst or loud noise which less than one second, e.g. from impact tools, punch presses or use of explosion.
Example of the most common workplace which exposed to excessive noise level are:
- Manufacturing
- Process Industries Foundries
- Mining
- Logging area
- Excavation work
- Construction
- Farms
- Airport
